Merge pull request #2739 from keon/fix/security-crypto-eval

Merge pull request #2740 from keon/fix/bfs-deque-bellman-heap

Merge pull request #2741 from keon/fix/structural-cleanup

Merge pull request #2742 from keon/fix/treenode-dedup-falsy-zero

Merge pull request #2743 from keon/fix/add-ds-tests-readme

Fix AVL in_order_traverse crash and remove duplicate tests

Fix max_height.py deque-to-list type mismatch crash

Fix iterative extended GCD and correct pypi-publish SHA

Fix ruff I001: sort imports in test_data_structures.py

Fix ruff I001: sort imports in construct_tree_postorder_preorder.py

Fix ruff lint: Optional → X | None, sort imports, wrap long docstring

Fix ruff E501: shorten long deque initialization line in path_sum2.py

Fix ruff E501: wrap long docstring line in rsa.py

Add data structure tests, fix README coin_change example

Fix falsy-zero bug in BST validation, deduplicate TreeNode definitions